diff --git a/server.js b/server.js
index 72481bc..4597887 100644
--- a/server.js
+++ b/server.js
@@ -7,11 +7,15 @@ import pg from "pg";
 const { Pool } = pg;
 const app = express();
 
-// --- MIDDLEWARES ---
-app.use(cors());
+// =========================
+// MIDDLEWARES
+// =========================
+app.use(cors()); // Habilita conexiones desde tu web
 app.use(express.json());
 
-// --- ENV ---
+// =========================
+// VARIABLES DE ENTORNO
+// =========================
 const {
   DATABASE_URL,
   JWT_SECRET,
@@ -21,22 +25,28 @@ const {
 } = process.env;
 
 if (!DATABASE_URL || !JWT_SECRET) {
-  console.error("ERROR FATAL: Faltan DATABASE_URL o JWT_SECRET");
+  console.error("❌ ERROR FATAL: Faltan variables DATABASE_URL o JWT_SECRET");
   process.exit(1);
 }
 
-// --- DB ---
+// =========================
+// CONEXIÓN BASE DE DATOS (CORREGIDO)
+// =========================
 const pool = new Pool({
   connectionString: DATABASE_URL,
-  ssl: DATABASE_URL.includes("localhost") ? false : { rejectUnauthorized: false }
+  ssl: false // <--- ESTO ARREGLA EL ERROR DE REINICIO
 });
 
-// --- RUTA HEALTH CHECK (Para evitar el 404/502) ---
+// =========================
+// RUTA DE "ESTOY VIVO"
+// =========================
 app.get("/", (req, res) => {
-  res.status(200).send("IntegraRepara API Online");
+  res.status(200).send("🚀 IntegraRepara API v1.0 - Online");
 });
 
-// --- HELPERS ---
+// =========================
+// FUNCIONES DE AYUDA
+// =========================
 function normalizePhone(phone) {
   let p = String(phone || "").trim().replace(/\s+/g, "").replace(/-/g, "");
   if (!p) return "";
@@ -58,139 +68,146 @@ function signToken(user) {
   );
 }
 
-// --- WHATSAPP ---
+// Middleware para proteger rutas
+function authMiddleware(req, res, next) {
+  const h = req.headers.authorization || "";
+  const token = h.startsWith("Bearer ") ? h.slice(7) : "";
+  if (!token) return res.status(401).json({ ok: false, error: "No token" });
+  try {
+    const payload = jwt.verify(token, JWT_SECRET);
+    req.user = payload;
+    next();
+  } catch {
+    return res.status(401).json({ ok: false, error: "Token inválido" });
+  }
+}
+
+// =========================
+// WHATSAPP (EVOLUTION API)
+// =========================
 async function sendWhatsAppCode(phone, code) {
   if (!EVOLUTION_BASE_URL || !EVOLUTION_API_KEY) {
-    console.log("Simulando envío WhatsApp (Faltan claves):", code);
-    return { ok: true };
+    console.log("⚠️ Evolution no configurado. Código simulado:", code);
+    return { ok: true, skipped: true };
   }
   try {
-    // Detectamos si la URL base termina en / o no
     const baseUrl = EVOLUTION_BASE_URL.replace(/\/$/, "");
     const url = `${baseUrl}/message/sendText/${EVOLUTION_INSTANCE}`;
     
     const body = {
       number: phone.replace("+", ""), 
-      text: `Tu código es: ${code}`
+      text: `🔐 Tu código IntegraRepara es: *${code}*\n\nNo lo compartas.`
     };
 
+    // Usamos fetch nativo de Node.js
     const res = await fetch(url, {
       method: "POST",
-      headers: { "Content-Type": "application/json", "apikey": EVOLUTION_API_KEY },
+      headers: { 
+        "Content-Type": "application/json", 
+        "apikey": EVOLUTION_API_KEY 
+      },
       body: JSON.stringify(body)
     });
     
     if (!res.ok) {
         const txt = await res.text();
-        console.error("Error Evolution:", txt);
+        console.error("❌ Error Evolution:", txt);
         return { ok: false };
     }
     return { ok: true };
   } catch (e) {
-    console.error("Error envío:", e);
+    console.error("❌ Error enviando WhatsApp:", e);
     return { ok: false };
   }
 }
 
-// --- RUTAS ---
+// =========================
+// RUTAS
+// =========================
 
-// Registro
+// 1. REGISTRO
 app.post("/auth/register", async (req, res) => {
   const client = await pool.connect();
   try {
     const { fullName, phone, address, dni, email, password } = req.body;
     const p = normalizePhone(phone);
-    if (!fullName || !p || !email || !password) return res.status(400).json({error: "Faltan datos"});
+
+    if (!fullName || !p || !email || !password) {
+      return res.status(400).json({ ok: false, error: "Faltan datos obligatorios" });
+    }
     
     const passwordHash = await bcrypt.hash(password, 10);
     
     await client.query('BEGIN');
     
-    // Check usuario
-    const check = await client.query("SELECT * FROM users WHERE email=$1 OR phone=$2", [email, p]);
+    // Comprobar si existe
+    const checkUser = await client.query("SELECT * FROM users WHERE email = $1 OR phone = $2", [email, p]);
     let userId;
 
-    if (check.rowCount > 0) {
-        const u = check.rows[0];
-        if (u.is_verified) {
-            await client.query('ROLLBACK');
-            return res.status(409).json({error: "Usuario ya existe"});
-        }
-        // Actualizar existente no verificado
-        await client.query("UPDATE users SET full_name=$1, password_hash=$2 WHERE id=$3", [fullName, passwordHash, u.id]);
-        userId = u.id;
+    if (checkUser.rowCount > 0) {
+      const existing = checkUser.rows[0];
+      if (existing.is_verified) {
+        await client.query('ROLLBACK');
+        return res.status(409).json({ ok: false, error: "Usuario ya registrado y verificado." });
+      }
+      // Actualizar usuario existente no verificado
+      await client.query(
+        "UPDATE users SET full_name=$1, address=$2, dni=$3, password_hash=$4 WHERE id=$5",
+        [fullName, address, dni, passwordHash, existing.id]
+      );
+      userId = existing.id;
     } else {
-        // Nuevo
-        const ins = await client.query("INSERT INTO users (full_name, phone, address, dni, email, password_hash) VALUES ($1,$2,$3,$4,$5,$6) RETURNING id", [fullName, p, address, dni, email, passwordHash]);
-        userId = ins.rows[0].id;
+      // Crear nuevo
+      const insert = await client.query(
+        "INSERT INTO users (full_name, phone, address, dni, email, password_hash) VALUES ($1, $2, $3, $4, $5, $6) RETURNING id",
+        [fullName, p, address, dni, email, passwordHash]
+      );
+      userId = insert.rows[0].id;
     }
 
-    // Código
+    // Código de verificación
     const code = genCode6();
-    const hash = await bcrypt.hash(code, 10);
-    const exp = new Date(Date.now() + 600000);
-    
-    await client.query("DELETE FROM login_codes WHERE user_id=$1", [userId]);
-    await client.query("INSERT INTO login_codes (user_id, phone, code_hash, expires_at) VALUES ($1,$2,$3,$4)", [userId, p, hash, exp]);
-    
+    const codeHash = await bcrypt.hash(code, 10);
+    const expiresAt = new Date(Date.now() + 10 * 60 * 1000); // 10 min
+
+    await client.query("DELETE FROM login_codes WHERE user_id = $1", [userId]);
+    await client.query(
+      "INSERT INTO login_codes (user_id, phone, code_hash, expires_at) VALUES ($1, $2, $3, $4)",
+      [userId, p, codeHash, expiresAt]
+    );
+
     await sendWhatsAppCode(p, code);
-    await client.query('COMMIT');
     
-    res.json({ok: true, phone: p});
+    await client.query('COMMIT');
+    res.json({ ok: true, phone: p, msg: "Código enviado" });
+
   } catch (e) {
     await client.query('ROLLBACK');
-    console.error(e);
-    res.status(500).json({error: "Error servidor"});
+    console.error("Error en Registro:", e);
+    res.status(500).json({ ok: false, error: "Error interno del servidor" });
   } finally {
     client.release();
   }
 });
 
-// Verificación
+// 2. VERIFICAR CÓDIGO
 app.post("/auth/verify", async (req, res) => {
-    try {
-        const { phone, code } = req.body;
-        const p = normalizePhone(phone);
-        
-        const q = await pool.query(`
-            SELECT lc.*, u.id as uid, u.email, u.phone 
-            FROM login_codes lc JOIN users u ON lc.user_id = u.id
-            WHERE lc.phone=$1 AND lc.consumed_at IS NULL AND lc.expires_at > NOW()
-            ORDER BY lc.created_at DESC LIMIT 1`, [p]);
-            
-        if (q.rowCount === 0) return res.status(400).json({error: "Código inválido"});
-        
-        const valid = await bcrypt.compare(String(code), q.rows[0].code_hash);
-        if (!valid) return res.status(400).json({error: "Código incorrecto"});
-        
-        await pool.query("UPDATE login_codes SET consumed_at=NOW() WHERE id=$1", [q.rows[0].id]);
-        await pool.query("UPDATE users SET is_verified=TRUE WHERE id=$1", [q.rows[0].uid]);
-        
-        const token = signToken({id: q.rows[0].uid, email: q.rows[0].email, phone: p});
-        res.json({ok: true, token});
-    } catch (e) {
-        console.error(e);
-        res.status(500).json({error: "Error verify"});
-    }
-});
+  try {
+    const { phone, code } = req.body;
+    const p = normalizePhone(phone);
+    
+    const q = await pool.query(`
+      SELECT lc.*, u.id as uid, u.email 
+      FROM login_codes lc 
+      JOIN users u ON lc.user_id = u.id
+      WHERE lc.phone=$1 AND lc.consumed_at IS NULL AND lc.expires_at > NOW()
+      ORDER BY lc.created_at DESC LIMIT 1`, 
+      [p]
+    );
 
-// Login
-app.post("/auth/login", async (req, res) => {
-    try {
-        const { email, password } = req.body;
-        const q = await pool.query("SELECT * FROM users WHERE email=$1", [email]);
-        if (q.rowCount === 0) return res.status(401).json({error: "Credenciales"});
-        
-        const u = q.rows[0];
-        const match = await bcrypt.compare(password, u.password_hash);
-        if (!match) return res.status(401).json({error: "Credenciales"});
-        if (!u.is_verified) return res.status(403).json({error: "No verificado"});
-        
-        res.json({ok: true, token: signToken(u)});
-    } catch(e) {
-        res.status(500).json({error: "Error login"});
-    }
-});
-
-const port = process.env.PORT || 3000;
-app.listen(port, "0.0.0.0", () => console.log(`🚀 Server OK en puerto ${port}`));
\ No newline at end of file
+    if (q.rowCount === 0) return res.status(400).json({ ok: false, error: "Código inválido o expirado" });
+    
+    const valid = await bcrypt.compare(String(code), q.rows[0].code_hash);
+    if (!valid) return res.status(400).json({ ok: false, error: "Código incorrecto" });
+    
+    await pool.query("UPDATE login_codes SET consumed_at=NOW() WHERE id=$1
\ No newline at end of file